Fastener



Search Room Oct. 12, 1943. F, H. N. WOHLERS FASTENER Filed D60. 1, 1941FIG.

g e m Fl G. 3

INVENTOR 85R! EDRICH H. N. WOHLERS W ATTORNEY.

FIG.

Patented Och 12, 1943 BEECH HOOm FASTENER Friedrich H. N. Wohlers,Hempstead, N. Y., as-

signor to The Hinde & Danch Paper Company, Sandusky, Ohio, a corporationof Ohio Application December 1, 1941, Serial No. 421,183

3 Claims.

This invention relates to boxes of fiber board and similar materials,particularly corrugated board, and is particularly directed to a box forthe shipping of textile skeins, having an integral fastener composed oftwo elements locking against one another at right angles at an edge ofthe box so that the fastener cannot become open accidentally withoutshearing off the looking elements. The fastener when closed does notincrease the thickness of the lid, but folds flush with the outsidesurface of the box without tape or adhesive, thus permitting such boxesto be slid one upon another without catching or tearing, and is madeintegral with the box blank.

To the accomplishment of the foregoing and related ends, the preferredembodiment of said invention consist of means hereinafter fully setforth in the annexed drawing and the following. description of certainstructures embodying the invention, such disclosed means constituting,however, but one of the structural forms in which the principle of theinvention may be used.

In the accompanying drawing:

Fig. l is a perspective view of a corrugated board box employing myimproved integral fasteners in unlocked position and with the boxpartially open;

Fig. 2 is a detail front elevation of one integral fastener in closedposition; and

Fig. 3 is a cross sectional detail of Fig. 2 as indicated by the line3-3 on Fig. 2.

Such terms a front, rear, top, bottom, sides and ends, are used in thespecification and in the claims for identification, not as limitations,and are used from the point of view of Fig. 1.

As here illustrated, my fastener is applied to a box of generallyconventional construction, having a full lap lid I, the front edge 2 ofwhich overlies the top edge fold 3 of the front wall 4 when the box isclosed. A flap 5 hinged along the edge 3 turn in under the lid I. Thisflap is slotted along its fold line 3 as shown at 6, the slotspreferably narrowing toward their respectivends'Ito awidth perhapsslightlyle'ss" than the thickness of the material. Keepers, generallyindicated by reference character 1, are cut from the material of the boxfront 4 and flap 5, remaining bendably attached at their bases alonglines 8. A tongue 9, preferably tapered, is set off on the free end ofeach keeper by the fold line 3, which line is designated as 3A on thekeepers.

The front edge 2 of the lid I carries tucks l0 corresponding to theslots 6. Such tuck are preferably tapered for easy entrance into the p a1 I slots 6 and for tight fit when shoved home. Slots I2 in the tucksl0, along the edge 2, receive the keeper tongues 9 when the box isclosed, whereby a reciprocal locking action of parts 9, 5 and I0results, such that the lid cannot open without tearing some part, unlessthe fastening elements are intentionally opened by successivedisengagement of parts. When the box is closed the tongues 9 fit snuglyin the notches 9A from which they were cut, thereby preventing the edgesof such tongues from contact with, and possible injury to or by thecontents of the box.

It will be noted that when the box is in closed position that part ofeach keeper 1 which is between line 3A and 8 is flush with the frontwall 4, while the tongues 9, flap 5 and tucks ID are all inside the box.Thus there are no projections from the smooth outer surface of the boxto interfere with sliding one such box endwise into a pile, or to catchand tear when handling.

If desired the box can be sealed by a tape or sticker on the front 4over the keeper, whereby breaking of such seal will indicate that thebox has been opened.

From the foregoing it will be seen that I have invented a lock adaptedto various forms of boxes which is flush with the outer surface of thebox, which firmly secures the parts of the box in their closed relation,and also firmly secures itself from unlocking so that it cannot beopened accidentally without shearing off the lock itself. My inventionalso offers the advantages of being readily closed, and readily openedby the user.

Other modes of applying the principles of my invention may be employedinstead of the one explained, change being made as regards the structureherein disclosed provided th me n stated by any of the following claimsor the equivalent of, such stated means be employed.

I claim:

1. A box comprising an outer lap with tucks hinged along the free edgethereof, a flap hinged to the edge of a wall of said box along a linewhich said free edge overlies when the box is closed, keepers cut fromsaid wall and from said flap, each keeper including a body portionhinged at its base to said wall along a line parallel to said flap hingeline and adapted when the box is fastened to be in the plane of saidwall, each keeper including a tongue out from said flap and hinged tosaid body portion along said flap hinge line and adapted when the box isclosed to underlie entirely the top lap and to lie entirely in the planeof said flap and thereby to underlie the top lap entirely, slots in saidflap extending along said flap fold line on both sides away from therespective positions of said keepers and adapted to receive said tucksbefore said keepers are pushed in, and slots in said tucks along thetuck fold lines adapted to be entered respectively by said keepertongues when the box is fastened;

2. A box having side walls, a lap lid hinged to the top edge of one sidewall and having a free edge adapted to overlie the top edge of theopposite side wall, a flap hinged to the upper edge of said oppositeside wall and adapted to underlie said lid, a slot extending across thehinge connection between said flap and wall, a keeper hinged to theslotted side wall at the lower end of said slot and having a bodyportion adapted to occupy the portion of the slot in the side wall and afree end portion hinged to the body portion and adapted to occupy theportion of the slot in the flap, said flap having narrow slots extendinglaterally from the keeper slot along its hinge line, and a tuck Widerthan said keeper hinged to the free edge of said lid and adapted toenter said lateral slots, said tuck having a slot along its hinge lineadapted to register with the keeper receiving slot and to receive thefree end of said keeper.

3. A box having side walls, a lap lid hinged to the top edge of one sidewall and having a free edge adapted to overlie the top edge of theopposite side wall, a flap hinged to the upper edge of said oppositeside wall and adapted to underlie said lid, 9, slot extending across thehinge connection between said flap and wall, a keeper hinged to theslotted side wall at the lower end of said slot and having a bodyportion adapted to occupy the portion of the slot in the side wall and afree end portion hinged to the body portion and adapted to occupy theportion of the slot in the flap, said flap having narrow slots extendinglaterally from the keeper slot along its hinge line, and a tuck widerthan said keeper hinged to the free edge of said lid and adapted toenter said lateral slots, said tuck having a slot along its hinge lineadapted to register with the keeper receiving slot and to receive thefree end of said keeper, said tuck tapering toward its free end and saidtuck receiving slot narrowing toward their outer ends to less than thethickness of the tuck whereby said tuck has wedging engagement with saidflap.

FRIEDRICH H. N. WOHLERS.

